Dynamic Harness

Through unique features such as rotating clamps, customized connector overmolds and high-flex wiring, HarcoSemco’s harnesses are proven capable of operation in extreme dynamic applications. For blade-fold and ice protection systems on helicopter blades, for both main and tail rotors, HarcoSemco’s harnesses deal with high frequency blade rotation and wide variation of blade pitch-up/pitch-down, tilt/flap and lead/lag angles. These factors mean the harnesses are put under extreme structural and fatigue stress during operation. HarcoSemco’s harnesses excel under these conditions whilst maintaining their high level of environmental protection, essential for external installations.
HarcoSemco validates dynamic harness designs through use of in-house fatigue life test fixtures that replicate the particular movement of the application. These fixtures can be modified to suit the intended platform and installation. Typical harness test to operation ratio is 40:1, meaning one hour on our test fixture represents 40 in-flight hours.